On Mon, 2 Mar 2020 21:37:15 +0100 Eric Auger eric.auger@redhat.com wrote:

Since commit 7723f4c5ecdb ("driver core: platform: Add an error message to platform_get_irq*()"), platform_get_irq() calls dev_err() on an error. As we enumerate all interrupts until platform_get_irq() fails, we now systematically get a message such as: "vfio-platform fff51000.ethernet: IRQ index 3 not found" which is a false positive.

Let's use platform_get_irq_optional() instead.

Yes, that seems correct to me and avoids the false positive error message I saw before.

Signed-off-by: Eric Auger eric.auger@redhat.com Cc: stable@vger.kernel.org # v5.3+

Reviewed-by: Andre Przywara andre.przywara@arm.com Tested-by: Andre Przywara andre.przywara@arm.com

Thanks! Andre

---

drivers/vfio/platform/vfio_platform.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vfio/platform/vfio_platform.c b/drivers/vfio/platform/vfio_platform.c index ae1a5eb98620..1e2769010089 100644 --- a/drivers/vfio/platform/vfio_platform.c +++ b/drivers/vfio/platform/vfio_platform.c @@ -44,7 +44,7 @@ static int get_platform_irq(struct vfio_platform_device *vdev, int i) { struct platform_device *pdev = (struct platform_device *) vdev->opaque;

• return platform_get_irq(pdev, i);

• return platform_get_irq_optional(pdev, i);

} static int vfio_platform_probe(struct platform_device *pdev)